Science Optics Unit Test Grade 10 Flashcards
Incandescence is:
when light is produced by an object such as metal at very high temperatures
Bioluminescence is:
the ability of a plant or animal to produce light
Chemiluminescence is:
light produced from chemical reaction without a rise in temperature
Flourescence is:
light emitted by substances exposed to electromagnetic radiation
Phosphorescence is:
when an object stores energy from a source of light and then emits it slowly over a period of time
Triboluminescence is:
light produced from friction
Light Emitting Diode (LED) is:
The process of transferring electric energy directly into light energy
Electric Discharge is:
electric current pases through air or another gas
Electroluminescence is:
a material that emits light in response to the application of an electrical current or a strong electric field
Organic Light Emitting Display (OLED) is:
light source made of several thin layers of organic molecules that can use electric current to produce light
Plasma Display is:
when a signal causes a gas to release UV radiation that is absorbed by phosphors. Colors red, green and blue are produced.
Liquid Crystal Display (LCD) consists of:
many crystals that are lit up by a white light and are filtered by red, blue and green color filters. A special filter also blocks colors in any combination to produce a certain color.
Magnification equation for height
M = h i/ h o
Magnification equation for distance
M = - d i/ do
Where is the angle of incidence?
Between the normal and the light ray coming from the first medium
